Affects only the original setter of the timer, others who interact with it are unaffected

Setter shows no recollection of events that occurred during the elapsed time, as if time had skipped during that period

Useful:

For testing SCP's with a psychological effect on victims. Any psychological trauma is completely removed once the time expires

Can also be used in place of amnesiacs to interview subjects exposed to SCP's or SCP activities

Shock:

If a subject dies during the elapsed time. Once the timer goes off, the corpse will sometimes move, scream, or shake violently. (One patient recovered from a stroke, was quickly treated with blood thinners, and shows no permanent defects).

If anyone forces the timer to the ringing position early, the normal effects of the timer will NOT occur. Instead the setter becomes SCP-XXXX-a and will be affected by the timer regardless of who activated it at the time. Frequent use of the timer will result in SCP-XXXX-a showing memory gaps corresponding to its use, leading to low confidence in his own beliefs about the world, existential crisis's, insanity, and eventual suicide. For this reason, SCP-XXXX is only to be used during periods when most SCP-XXXX-a are asleep. (though this has been shown to interrupt REM sleep)

Test:

Set timer for an hour. Instruct D-personnel on how to deal with SCP-173. Send him in to clean his chamber. Once the timer rings, he blinks and dies.

Discovery:

SCP officials noticed an abnormal number of patients suffering from Short-Term-Memory-Loss in ___.

Patients frequently mumbled "Mind your minutes" and other nonsense phrases, leading us to identify this timer as the cause.

People tend to pretend as if nothing is wrong. The gap in memory would prove to be too terrifying to admit, especially to a stranger. It's easier to believe it's all in your head.

Interview Ideas:

conduct an interview to find new personnel for the foundation. When entering the room, ask the applicant to set the timer for 10 minutes. During this period ask standard and non-standard Foundation interview questions. At the 5 minute mark switch seats with the applicant. Use reactions which occur at the 10 minute mark as a final benchmark for applicants.

Pairing can be caused by

interfering with the timer

damaging the timer

As a courtesy to our readers on mobile devices, please collapse long posts. ~Zyn

This kind of idea is what we refer to as a "magic item", or a "thing what does a thing". Specifically, this is a kitchen egg timer that does some stuff when somebody sets it. These types of articles, while incredibly common, can be successful. Hell, my last SCP article is a super cliché thing that does a thing, and bonus points because it let me make a dumb pun in the title. The success of an article like this is entirely dependent on execution, however. These anomalies often have simplistic abilities, so they must differentiate themselves from the pack in some interesting way. This essay by Uncle Nicolini was integral to the success of my own "thing doing a thing" article, as it is filled with amazing examples of what to do and what not to do for these kinds of anomalies. Definitely give it a read, because it is my new favorite guide!

It is also worth mentioning that a lot of the effects that you've got here feel tacked on for added content and interest, but these additions just complicate and convolute the core anomaly. For example, this timer does the following: